Want to write faster?  Forget about typing like a transcription expert.  The gains you will realize from that aren't all that huge, unless you can come up with ideas at the same rate as the recorded voices can recite them.

1. Learn to draft with no regard.  When you draft, let the thoughts flow without regards for issues of clarity and correctness.  You can worry about these things later when you're editing and revising.  Whiel composing the first draft, stay focused on simply expressing yourself.

2. Schedule a regular time to write.  A regular schedule, repeated consistently over time, builds habit.  The more you're able to integrate positive behaviors into your routines, the more fluid your work ends up during their execution.

3. Use a timer.  You know how everyone always works fast when a deadline is looming?  That's what a timer counting down in front of you does whenever you write.  You'll be amazed at how much distractions you can ignore when the time is right there to occupy you.

4. Take advantage of speed-improving writing tools.  Software-based writing assistants, such as grammar checkers and automated style guides, can literally shave off hours from your work.  If you ask  me, all writers who care about their productivity should put them to good use.

But when you are done, you will be surprise seeing with the result of your detremination and on how to write faster without missing something or leaving something unorganized. Just follow what is being stated above. There is no harm in trying if you think you can do it, right?